1 Department of Pulmonary Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands. Electronic address: [email protected].
2 Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark.
3 The Royal Marsden & Royal Brompton Palliative Care Service, The Royal Marsden NHS Foundation Trust, London, England.
4 Interstitial Lung Disease Unit, Royal Brompton Hospital, Royal Brompton & Harefield NHS Foundation Trust., London, England.